Justin



2@ HILL J. 0. SCHWARZ AND G. BIORKLUND. PEDAL MEGHANLSM Foa PNEDMATLCDEvLcEs.

APPLLCATIDN FILED ocT.6, 19u. 1,306,081,

Patented June 10, 1919.

nunms Pneus co,. pnonvumo.. wnsnmcnm. u. c.

JUSTIN o. SCHWARZ, or NEW YORK, N. Y.,

AND GUSTAV BJORKLUN'D, OF WEST NEW YORK, NEW JERSEY.

PEDAL MECHANISM FOR PNEUMATIC DEVICES.

Specication of Letters Patent.

Patented J une 10, 1919.

Application filed October 6, 1917. Serial No. 195,191.

To all whom t may concern:

Be it known that we, JUSTIN O. SCHWARZ, a citizen of the United States,and GUsTAv BJORKLUND, a subject of the Kin of Sweden, residing at NewYork city, Y., and West New York, N. J., respectively, have inventedcertain new and useful Improvements in Pedal Mechanism for PneumaticDevices, of which the following is a specilication, reference being hadtherein to the accompanying drawing.

Our invention relates to improvements in pedal mechanisms for pneumaticdevices such as musical instruments, and has particular reference to andis illustrated in-thc accompanying drawing in its application to afolding pedal for a player-piano.

Referring to said drawing indicated as Figure 1, 2 indicates the bottomof a cabinet or piano upon which the bracket or casting 3 is secured asshown. At each side of this bracket or casting is secured asubstantially Y-shaped member 4 pivoted at 5 to the overlianging flange3 of the bracket 8 and at 6 to the lever 7 pivotally connected to thefootboard 8 at 9. 10 indicates another lever somewhat L-shaped which isalso pivoted to the' end of the flange 3 at 11 as shown and at its outerend secured to the toe-plate 12 pivotally mounted at 18 and providedwith toes 14-14, said pivotal bearing 13 being secured t-o the base ofthe pedal-boards 8-8 as shown.

The other leg of the Y-shaped member 4 is pivotally secured at 15 to therod 16 which in turn is pivoted at the other end at 17 to the lever 18,one end of which is pivotally secured at 19 t-o the bracket 20 upon theunderside ofthe piano 21, the other free end of the bracket 18 beingpivotally connected to the lever 23 which in turn is pivotally securedat 24 to the movable portion of the bellows 25 being suitably securedthereupon by the bracket 26, it being understood that all of said partsare duplicated upon the other side of the pedal mechanism for operatingthe bellows 25.

From the foregoing it will be seen that the front of the foot-pedals aresupported by the toes 14-14 when in use, and as the footboard 8 isoperated the Y-shaped lever 4 is oscillated upon the pivotal bearing 5thereby transmitting the thrust of the foot-board 8 through the'connecting members 7, 4 and l and bracket rod 18 and: 23 to the bel-flows 25 for pneumatically operating the piano, the same operation takingplace from the foot-board 8 to the bellows 25 at the other side of themechanism. When it is desired to fold the pedal mechanism out of theway, the toe-bar 12 may be lifted upwardly and backwardly, thus bringingthe toe-piece to the top and inverting the position of the foot-boardswhich will thereupon remain in a vertical position behind the ront ofthe piano indicated by the reference character 26, thus providing asimple, coinpact, durable and easily operatable pedal mechanism whichcan be quickly and conveniently dropped out of the front of a piano foruse or folded back into the same when not desired for automatic playing.

The particular folding pedal mechanism herein shown and described hasbeen illustrated in its application more particularly to a baby grandpiano, although it will be readily understood that the same issusceptible of application to an upright piano or other form ofpneumatic instrument, and in fact various modifications may be made inthe construction and arrangement of parts without departing from thespirit of the invention as claimed.

We claim 1. In combination with a folding pedal mechanism, a basebracket therefor, and at each side thereof a substantially Y-shapedpivoted member, one leg of which is pivotally secured to said basebracket and the other leg of which is pivotally connected with apneumatic, the stem of said Y-shaped member being pivotally secured by alever to a pedal-board at one end, and the other end of said pedal-boardbeing connected by a lever to said base support.

2. In combination with a folding pedal mechanisnna base brackettherefor, and at each side thereof a substantially Y-shaped pivotedmember, one leg of which is pivotally secured to said base bracket andthe other leg of which is pivotally connected with a pneumatic, the stemof said Y-shaped niember being pivotally secured by a lever to apedal-board at one end. and the other end of said pedal-board beingconnected by a lever t0 said base support, said lever connecting saidbase support and said` pedal-board having interposed therebetween a toesupport for said pedal-board. l I ,l

8.; In combination with a folding pedal mechanism, a base brackettherefor, andV at each side thereof a substantially Y-shaped pivotedmember, one leg of Which-is pivotally secured to said base bracket andthe other leg of which is pivotallyl connected with a pneumatic, thestem of said Y-shaped member being pvotally secured by a lever to apedal-boardl at one end,31 and lthe other'V` end of said pedal-boardbengfpivotally coll-1A Y nected by a lever to said base support, saidpivotal connection between said pneumatic and one of ,the legs of saidY-shaped member comprising a lever pvotally yconnected to saidpneumatioand a leverpivotally con- `JUSTIN ofsoHWARz.

GUSTAV BJ ORKLUND.

Vtnesses: e

Rire K. ABRAHAMS, Claes.A BIAMO.;

Gopiesiof this patent may be obtained for veA cents each, byaddressingthe YCommiss,onerrof:,1'atent,.

Y Washington,v DLG.

